[erlang-questions] Monitoring changes in a directory tree

[James Hague]

Has anyone put together a module for monitoring changes in directory
tree?  If a file is changed, added, or deleted, I want to receive a
message about it.  The code for this is very different under OS X and
Windows, so having a nice cross-platform module would be wonderful.

Or is there a standalone utility I can spawn and get notifications from?